CVE-2026-78660 (GCVE-0-2026-78660)
Vulnerability from cvelistv5
Published
2026-10-08 22:53
Modified
2026-10-09 16:23
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE
Summary
Historically, we have been rather lax about malformed framing-related headers in our HTTP/2 implementation, as they cannot interfere with HTTP/2 framing. However, this makes it possible for our HTTP/2 implementation to forward responses containing such headers to an HTTP/1 client when acting as a reverse proxy. If the HTTP/1 client also does not behave strictly enough, this can result in response smuggling.
References
Impacted products
Vendor Product Version
Go standard library net/http Version: 0   ≤
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